Ignition system.



H. F. GEIST.

IGNITION SVSTEIW.

APPLICATION man na. 2;I |915.

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3 SHEETS-SHEEI' Y.

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H.'F. GEST:

IGNITION SYSTEM. APPLlCATION FILED FEB. 23. |915.

Patented J uly 2,' 1918.

3 SHEETS-SHEET?.

db connection with a magneto that imparts an litt ScmNs.

'fofti'zen :of the United States, residing` at Racine, in the county of Racine' and State of lll-lfisconsin, have invented certain new4 and usefulv Improvements vin Ignition Systems, oit-Which the following is a specification. l

,-'llhis invention relates to ignition systems forinternal combustion engines.

Une of the objects of the invention is to produce aniechanism suitable for operating anordinary igniter plug vand at the saine time for operating the magneto which pro- `'vides electric current for the plug, the mech Bill ten Waysactl hg at right angles to a line radialI anisin being so arranged that the magneto can at any 4tiine'be removed or replaced, or

4be left iilplace 'Without operating, yWit-hout in any` Way interfering, with the operation of the igniter plug, or without requiring any adjustments between the magneto inductor and its actuating member. A further objectief the invention is to produce a mechanism operatively'connected to thefmagneto-in a manner such that,k the stresses'tending to operate the rotor of the ma eto yare always rotational, the torce qilng 3o' rotate or oscillate the motor alfrom the center of rotation of the rotor.

A further object of the invention is to produce asimple and vecient mechanism ttor' operating simultaneously both the igniter plug and the magneto.

'i A further object of the invention 1s-to produce an ignition system when used.- in

ical ignition spark the volume and. in itygof which is independent of the speed apparent from a consideration of the drawings attached hereto, and the description herein E Figure, A1 of. the accompanying drawings is an elevation of a magneto, an igniter plug and 4the operating mechanism therefor,

which embodies the features of my inven-' tion. `Fig. 2 is an 'elevation at. right angles to Fig. 1. Fig. 3 yis a cross section along kthe line 3+?, oflFig. 1. Fig. Ll is a cross section along the line 14n- 4 of Fig.. 1 showing a poi'- tion only of the mechanism,` the movable parts thereof being in positions dili'ei'ent from those shown in Fig. 3. lBig. 5 is a dia- Specification of Letters'lPatent. PApplication led February a3, 1915. I Serial No. 9,770.

a r. renter, or nnoiinnwrseonsin, fission-on, nr Mnsnn assrenivmnrs, To .-Wnns'rnn nnrc'rnie ooivirnnr, or encina, Wisconsin, n conieonarion or Vienrr'ion srsrni/i.

ltlatented July it, wie.

grammatie View of my magneto with a bat tery and an igniter.

In the drawings l indicates the igniter plug, mounted on the igniter block 2, which., by means of the flange 3, is fixed, in a usual manner, lto the cylinder of the engine. Integral ivitli the flange 3, or fixed thereto in any suitable manner, is the frame @i of the operating mechanism 5 of the ignitei` plug and the magneto. Mounted on the frame 4f ofv the operating mechanism, by means of bosses 6, is the magneto 7.

I The magneto if may be of any suitable construction, the form which l prefer is fully illustrated and described in my copending. application Serial No. 7979 .tiled February 13, 1915, and` reterence may be had to said application for tall information in regard thereto. I have shown dia raminatically in Fig. 5 so much of this pre erred term of magneto as may be necessary for the purposes of this application. The rotor 72 of the magneto when in operation, is

oillated by the operating mechanism in a manner hereinafter described. lt is to be understood, however, that any other :Form

'of oscillating magneto may bensed in counection with my mechanism.

The igniter plug l comprises a lixedelectrede l5, and a niovfable electrode ,MifThe movable electrode is fixed to an arm 17 projecting from a headl 18 of a shaft mountY ed in the frame 4 of the mechanism. And

lid

titi

J a further purpose of the mechanism is to The lined electrode 15 is ooit,

iid

mounted on a head 21 of the pin'lQn. The f movable electrode is electrically in Contact with the framed. and hence is electrically connected with the grounded ends ofthe ignition circuit in the usual manner."

The operating inechanisni comprises a shaft 95, Which is mounted in the :frameel; coaxial with the shaft 2G of the magneto. llotatably mounted on the'sliaft '25 is a ineinher E29 which comprises a pilishfinger 3 0 and spring arms 3l, each of the' springs 32 has ies one end xed to -a spring arm 31. and the 'other end fixed to a stud 33 of the framework, so that these springs at all times tend to hold the member 29 in the position of rest indicated by Fig. 3. j i

A push rod 34, reciprocated in any suitable manner` by the engine, isguided by a roller 35 rotatably mounted on a pin 36. This push rod 34 -when reciprocated is forced against the push finger and thus imparts a limited rotation to the member 29. Also rotatably mounted on the shaft 25 is a member 37, having, a' tooth 33 adapted to coat with a tooth 39 fixed to the member 29. Anarm 40 fixed to the member 37 carries a trip arm 41. The push yrod 34, by any suitable resilient means (not shown), is normally' held against the guide roller but as the rod pushes against the finger 30, teeth 38 and 39 cause the member 37 to rotate, and the trip arm 41 by means of the arm 40, is carried against a trip roller 42 which is supported in av manner hereinafter described. The trip roller is thus forced against the free end of the push rod 34, and the rod is thus pushed away from coaction with the finger 30, allowing springs 32 to force the member 29 quickly backward, to the position of rest. The inertia, however, of the movable. parts produces sufficient momentum to carry the member 29 backward beyond the normal position, for purpose-sto be hereinafter explained. The continual reciprocations of the rod 34 thus causes continual oscillations of the member 29. l

A member 45 rotatably mounted on the rotor shaft 26, has an arm 46 projecting out-- wardly and angularly therefrom. And the member 29 has an arm 47 projecting outwardly therefrom, and having ra slot 48 in the outer end thereof. Within 'this slot the upper end 49 of the arm 46 passes, the arrangement being such that any oscillations of the member 29 impart corresponding oscillations tothe rotor 72 through the medium of the arms 4.7 and 46. The two members 29 and 45, together with the rotor 7.2, are fixed to their respective shafts so that at thelimits of the oscillations of the rotor,

the rotor occupies the positions desired with A reference to the poles of the magneto.

Evidently, by this arrangement, as the two shafts 25 and 26 are coaxial., the actuating stresses transmitted from the push rod to the rotor, through the arms 47 and 46, are always rotational with reference to the rotor', that is they always act in a circular path concentric with the center of rotation of the rotor, and hence at right angles to lines radiating from this center. By this means the loss of energy and the irregularities due to non-concentric or straight-line stresses are entirely eliminated.

Operation of the igniter plug is produced in the following manner: Fixed to the pin gassoso 19 of the rotatable electrode is a member 55 having an outwardly and angularly extending arm 56. An adjustable set screw 57 is threaded into the outer end of the arm. '56 and may be set in position by means of the lock nut 58. The end 59 of the said screw projects from the arm 56 to a position which brings'it in contact with the arm 47 as this arm is rotated backwardly by the springs 32 or as it passes beyond the position of rest due to the springs. The screw 57 is so adjusted that such a contact is produced at a certain predetermined time with reference to the position of the rotor 72. The impulse given to the screw 59 by the arm 47 rotates the member 55, the pin 19, and hence the' arm 17, and thus opens the ignition circuit at the contact points of electrodes 16 and 15, Ithe adjustment being such that this breaking of the circuit, and hence the production of the ligniting spark, occurs at a time suitable for producing the explosion in the cylinder of the engine. A spring 60 prevents undesirable longitudinal movement of the movable electrode 16, and normally holds the contact points of the two electrodes together.

In order to adjust the time of the spark to the particular posit-ion of the engine piston desired, an adjusting arm 61 is provided. This arm is pivoted to the frame 4 by means of the pivot 62, and is adjustable on the frame so as to regulate the amount of engagement of the push rod 34 with the push lfinger 30. This adjustment is approximately at'right angles to the path of motion of the push rod. The pin 36 supports the guide roller 35 and is fixed firmly, by means of a boss 63, to lever 61. Mounted on this pin 36 is an arm 43 which carries the trip roller 42. lVhen the arm 61 is moved to the position indicated by Fig. 3 the trip roller is thrown forward along the trip'arm 41; and as the push rod 34 pushes against the finger 30 and thus rotates the member 29, the trip arm 41 will force the trip vroller toward the free end of the push rod and the rod will be pushed away-from coaction with the push nger 30. Then the adjusting lever 61 is in this position this releasing action will take place earlier than when the trip roller is thrown to the right by means of the lever. As a consequence the member 29 will be released' more quickly, and in its backward oscillation will more quickly come in contact with th( screw 57 so .as to open the Contact points earlier with relation to the position of the piston in the cylinder. This posi-tion of the lever 61 is therefore the advance position. When the lever 61 is in the position 65 the spark' is retarded with reference to the piston and hence this position is the retard position. y

lf for any reason it is desired to operate4 the igniter plug without operating the magnarnoao neto, using a' battery tor-fafsource of electric current, 1t`1s necessary'only to disoonnect the inductor ot the magneto from the operating mechanism. rlhis may be done by removing the member ab from the magneto shaft by taking out screws 70.and 7l. Ur if itl is desired, themagneto may be entirely renroved. lin either ot these cases the igniter plug `will be operated by the mechanism,l

exactlyas if the magneto were in place. `With the battery in parallel as indicated in lfig. 5, with theusual or any suitable oper` ating switches, the ignition system may be supplied with electric current by the battery or by the magneto, as desired, in the usual manner.

[although lhave described with some par- .as disclosed by the following claims.y

ll claim as my invention:

1. ignition apparatus ot ythe class de-k scribed comprising in combination With spark electrodes and a magneto, an oscillatory member arranged when operated to impart movement to said magneto and the movable spark electrode, a reciprocating push rod arranged successively to engage, move and release said oscillatory member and means operated by said oscillatory member for releasing the latter from the push rod.

Q. Ignition apparatus of the class described comprising in combination with spark electrodes and a magneto, an oscillatory yoke. springs normally retainin said yoke in a certain position, such oscil atory yoke arranged when actuated to operate said magneto and the movable spark electrode, a reciprocating push rod arranged successively to engage, move and release said oscillatory yoke, and means operated by said yoke for releasing the latter from the push rod.

3. llgnition apparatus of the class described comprisingl in combination with spark electrodes and a magneto, an oscilla` tory member arranged when. operated to impart movement to said magneto and the movable electrode, a reciprocating push rod adapted successively to engage, move and ref lease said oscillatory member, means open ated by said oscillatory member tor relaas ing the latter from. the push rod, and devices for varying the time at which said last mentioned means is operated by the oscilla tory member.

` 4. ignition apparatus of the class described comprising in combination with a magneto, an oscillatory member, springs normally retaining the oscillatory member in a certain position, said oscillatory mem ber arranged to impart movement to said. magneto, a reciprocating push rod` arranged successively to engage, move and release said oscillatory member, means operated by said oscillatory member for releasingthe latter from the push rod, and mechanism for varyy ing`- the time at which said last mentioned means is operated by the oscillatory mem ber.

5. Ignition mechanism of the class de'-y scribed comprisne' a iframe carrying a magneto and spark electrodes, a yoke mounted HARRY F. GEIST.

lin the presence ot- Mrs. C. E. Finn, 1E. C. .lonneom lon the trarne arranged when actuated to operate said magneto and electrodes, springs 

